212966831

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 274323456

約数和(自身を除く): 61356625

約数列:

[1, 7, 11, 43, 77, 131, 301, 473, 491, 917, 1441, 3311, 3437, 5401, 5633, 10087, 21113, 37807, 39431, 61963, 64321, 147791, 232243, 433741, 450247, 707531, 1625701, 2765803, 4952717, 19360621, 30423833, 212966831]

約数ペア:

[(1, 212966831), (7, 30423833), (11, 19360621), (43, 4952717), (77, 2765803), (131, 1625701), (301, 707531), (473, 450247), (491, 433741), (917, 232243), (1441, 147791), (3311, 64321), (3437, 61963), (5401, 39431), (5633, 37807), (10087, 21113)]